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Fx-ES10XL Optical Transmitter 1550 nm
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  BaalFTTx - Series  
     
  Fx-ES10XL
OPTICAL TRANSMITTER 1550 NM		   print pdf version  
  Fx-ES10XL  
 

Application

  • Externally modulated 1550 nm DFB laser transmitter for electrical to optical conversion of multichannel CATV signals like AM-VSB, FM and QAM signals
  • Enables the usage of optical amplifiers (EDFAs) as boosters or repeaters in order to realize large scale HFC networks
  • Excellent performance in order to realize links exceeding 100 km

Features

  • Low noise, narrow linewidth CW-DFB laser
  • ITU-Grid wavelength
  • Wavelength adjustable +/- 100 GHz
  • Electrooptical modulator with 2 optical outputs
  • Automatic load control (ALC) for CATV signals input
  • Adgustable RF slope
  • > 2 x 10 dBm output power (Fx-ES10XL-100)
  • Adjustable SBS threshold up to 19 dBm to increase transmission distance
  • Front panel RF test point –20 dB
  • Dual, hot-plug-in power supply modules for 100... 240 VAC, +/- 36 ... +/-72 VDC
  • Web and SNMP Interface (a-version)
  • RS485/232 interface (b-version)
  • LC display and LED status indication
  • General purpose I/O interface for remote functions
  • Very thin, only 1 U design for mounting into 19”, ETSI or JIS racks


 
  Block Diagram  
     
  Bock Diagram  
     
 
Technical Data
  
General
Unit
Optical Connector
Any type of high return loss connectors front or rear side mounted
Optical fiber
standard single mode 9/125 µm
RF-connector
F-female, front or rear side mounted
Control interface
a-version: Ethernet 10/100 interface:,
b-version: RS485/232 interface
Power supply types
(Dual redundant, hot pluggable)
100...240 VAC, 50/60 Hz
+/- 36...+/- 72 VDC
(Real) Power consumption
[W]
< 56 / 63 (1/2 power supply unit(s) equipped)
Enlosure
19” / 1 rack unit [U]
(optionally compatible to ETSI or JIS standards)
Weight
[kg]

~ 9.0 (depend on power supply)

Safety
EN 60950, Laser class 1M according IEC 60 825-1 (eyesafe for normal viewing)
EMC
EN50083-2
Climatic specification
  Operation
  Storage

ETS 300 019, class 3.1
ETS 300 019, class 1.2
Optical Properties
Unit
FX-ES10XL-85
Fx-ES10XL-100
Wavelength
[nm]
1548...1560 or ITU grid ch 23...37
Side mode suppression
[dB]
> 30
Wavelength adjustment range
[GHz]
-100, -50, 0, 50, 100
Optical power
[dBm]
2 x 8.5 min.
2 x 10.0 min.
Relative intensity noise for CATV
(for optical fiber return loss > 40 dB)
[dBc/
Hz ]
< -158
(typ. < -160)
SBS-Suppression
[dBm]
Threshold adjustable between +13 and +19 dBm
Laser linewidth (typical)
[MHz]
0.3
 
     
 
Electrical Properties
Unit
      
RF frequency range
[MHz]
47...1000
Flatness
[dB]
<±0.75 (47...860 MHz) <±1.5 (860 MHz...1 GHz)
Nom. Input level per TV channel
[dBµV]
80
Input level range (per carrier)
[dBµV]
78...96 (for OMI = 5 % per CATV carrier)
True rms input level range
[dBm]
-16...+2 (for ALC correctly working)
Slope range
[dB]
-2 (cable equivalent) ... -8 (cable equalization)
RF impedance
[Ω]

75
Return loss
[dB]
> 20 (@ 47 MHz) - 1.5 dB/octave, minimum > 15
RF monitor output level
[dB]
-20 (+0.2 ... -0.8 dB @ 862 MHz, -1.3 dB @ 1GHz)
 
     
 
Performance Characteristics

Transmitter version
Unit
C42
D84
N77
Channel allocation plan for test
CENELEC 42
PAL-D 84
NTSC 77
number of channels
TV / FM (-4dB) / QAM64 (-10dB)
42 / 0 / 0
84 / 0 / 0
77 / 0 / 0
Noise bandwidth
[MHz]
5
5
4
CNR Tx/Rx
[dB]
55.5
52.5
53.5
CNR Link 1
[dB]
55.0
52.0
53.0
CNR Link 2
[dB]
53.0
50.5
52.0
CNR Link 3
[dB]
50.5
49.0
50.0
CSO Tx/Rx and Link 1
[dBc]
65
65
65
CSO Link 2
[dBc]
63
65
65
CSO Link 3 at output #1
[dB]
62
63
65
CTB
[dBc]
65
65
65
 
     
 
Test Configurations
Booster EDFA
1st Fiber Length
In-Line EDFA
2nd Fiber Length
RX
Tx/Rx
no
no
no
no
0 dBm
Link 1
no
35 km
no
no
0 dBm
Link 2
16 dBm
65 km
no
no
0 dBm
Link 3
13 dBm
52 km
13 dBm
52 km
0 dBm
 
     
       RX with 7 pA/√Hz input noise current density
     EDFAs with 5dB noise figure
     RF input level at 80 dBuV / TV channel		  
     
 
Ordering information
 
For more information on this product please contact BKtel communications. Properties for ordering optical transmitter Fx-ES10XL
Optical output power

60
85
100
+6.0 dBm
+8.5 dBm
+10.0 dBm
Freyuency plan *)
C42
N77
PAL84
Cenelec 42
NTSC 77
PAL 84
NMS-Interface
A
B
HTTP/SNMP Ethernet
RS485
Wavelength
X
15xx.xx
1548...1560
15xx.xx ITU wavelength
Optical connector
1
2
3
4
5
E2000
SC/APC
FC/APC-NTT
FC/APC_JDS
SC/APC with shutter
RF input / optical output
F
R
on front side
on rear side
Version
0
OEM

BKtel
OEM
Power supply

230/230
48/48
230
48
230/48
2 x (100...240 VAC)
2 x (36...72 VDC)
1 x (100...240 VDC)
1x (36...72 VDC)
mixed 230 VAC / 48 VDC
Power Plug
0
Eu
US
Sw
UK
Jp
Ch
No power cable included
Europe (Germany, Spain ...)
USA
Switzerland
UK, Ireland
Japan
China
*) Other frequency plan on request

 
  
 
Available ITU grid wavelengths
ITU Grid Ch. No.
DWDM Wavelength
 
ITU Grid Ch. No.
DWDM Wavelength
23
1558.98 nm
  31
1552.52 nm
24
1558.17 nm
 
32
1551.72 nm
25
1557.36 nm
 
33
1550.92 nm
26
1556.55 nm
 
34
1550.12 nm
27
1555.75 nm
 
35
1549.32 nm
28
1554.94 nm
 
36
1548.51 nm
29
1554.13 nm
 
37
1547.72 nm
30
1553.33 nm
     
Other wavelengths on request!      
 
     
      BKtel communications GmbH - www.bktel.com - E-Mail: info@bktel.com
     Specifications subject to change without notice		  
     
 
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